Product Overview
Tacrolimus (CAS 104987-11-3), also known as FK-506, is a potent macrolide immunosuppressant originally isolated from the fermentation broth of Streptococcus tsukubaensis. Tacrolimus works mechanistically by inhibiting calcineurin, which subsequently blocks T-cell activation and the transcription of specific cytokines. As a leading manufacturer of Tacrolimus CAS 104987-11-3 based in China, Conscientia Industrial delivers premium-grade batches utilized globally in the formulation of immunosuppressive medications, organ transplant rejection prevention therapies, and advanced treatments for severe atopic dermatitis. Our state-of-the-art production facility ensures a reliable industrial supply chains for global pharmaceutical companies and research institutions needing top-tier active pharmaceutical ingredients.
Technical Specifications
- Product Name: Tacrolimus
- Synonyms: FK-506
- CAS Number: 104987-11-3
- Category: Pharmaceutical APIs
- Quality Standard: USP / EP / JP / In-House Specification
- Molecular Formula: C44H69NO12
- Molecular Weight: 804.02
- Appearance: White to off-white crystals or crystalline powder
- Specific Rotation: -110.0° to -115.0°
- Purity (HPLC): ≥99.0%
- Water Content: ≤4.0%
- Residue on Ignition: ≤0.1%
- Heavy Metals: ≤10ppm
- Brand: Conscientia Industrial
- Country of Origin: China
Why Choose Conscientia Industrial
- Macrolide Fermentation Expertise: Specialized in the complex fermentation and high-resolution purification of immunosuppressive compounds.
- Standardized Manufacturing: We produce Tacrolimus in state-of-the-art facilities compliant with GMP guidelines to ensure the highest safety and efficacy.
- Technical Quality Control: Our facility utilizes advanced crystallization methodologies and strict environmental parameter tracking to ensure excellent batch uniformity and eliminate trace impurities.
- Advanced Analytical Verification: Every batch of Tacrolimus is thoroughly tested via high-performance liquid chromatography and mass spectrometry to fulfill international commercial regulatory expectations.
- Full Technical Documentation: We provide standard administrative data packages including the validated Certificate of Analysis, Material Safety Data Sheets, and full Method of Analysis records for Tacrolimus CAS 104987-11-3.
- Scalable Production Capacity: Our advanced chemical synthesizer systems easily transition from pilot-scale requirements to multiple metric ton commercial manufacturing volumes.
- Direct Source Advantage: As a primary manufacturer, we provide Tacrolimus CAS 104987-11-3 with competitive tier pricing, stable year-round inventory, efficient lead times and dedicated technical support.
Packaging & Storage
- Standard Packaging: 100g, 500g, 1kg in aluminum foil bags or custom specified pharmaceutical-grade containers.
- Storage Condition: Store in an airtight container under a dry environment at controlled room temperature, kept away from intense light, high moisture, and oxidation agents.
- Shelf Life: 24 months from the manufacturing date when stored under correct recommended conditions.
- Safety Handling: This is a high-potency immunosuppressant API intended for professional industrial production and laboratory research use only. Wear appropriate protective industrial equipment including a respirator, protective gloves, and safety goggles when handling this high-potency chemical material to avoid inhalation or skin contact.
Our logistics team ensures secure gloabl shipping of Tacrolimus CAS 104987-11-3 via international courier, air, and sea transportation.
Request a Quote & COA for Tacrolimus CAS 104987-11-3 Today.



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